Dating-stamp



(No Modem 2 sheets-sheet .1.

B. B. HILL.

DATING STAMP. No. 344,904.

Patented July 6, 1886.l

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Ilrrnn Srnrns BENJAMIN B. HILL, OF PHILADELPHIA, PENNSYLVANIA.

DATING- STAMP.

QEECIFICATION forming part o Letters Patent No. 344,904, dated July 6,1886.

Serial No. 187,721. (No model) To all whom it may concern,.-

Be it known that I, BENJAMIN B. HILL, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inSelf-Inking Band-I)ating Stam ps, of which the following is aspecification, reference being had therein to the accompanying drawings,in which* Figure l represents a front elevation of a stamp constructedaccording to my improvement in its normal position. Fig. 2 isaverticalcentral section in the same position. Fig. 3 is a section through theline x .e in Fig. l. Fig. 4 shows a sectional detail of a modication,and Fig. 5 is a vertical section showing the parts in the printingposition.

One of the main objects of this invention is to combine type-bands witha selfinking stamp in such a manner as to overcome the trouble due tothe inertia of the parts, while at the same time it shall be durable andeasy to adjust and operate, and unlikely to get out of order.

Previous to my invention self-inking banddaters had been made, but theywere either inconvenient to adjust, or so heavy that the inertia of theparts, when rapidly and continuously operated, caused the turningdevices to rapidly wear away, so that although they did good work for atime, yet after a short period they became badly worn from the shockscaused by the inertia of the parts.

A second object is a convenient adjustment of the bands,both as regardstheir relative position to the iixed inscription-plates and as regardsthe tension of the same on their bearings.

Referring to the drawings, Areprescnts the main frame, having theink-pad B, slots C, stays D, turning-pins E, and tube F, upon whichworks the handle G, carrying the operating arms or yoke II, all of whichmay be of the form shown in my Patent No. 315,286, except theturning-pins E, which should be short, so as to allow of the movement ofthe bands and their supporting devices. The yoke II is pivoted totheiiXed matter-plate I, at each end of which is a cam-plate, J, such as isshown in my aforesaid patent, in which, however, it is shown in thecenter ofthe plate.

This lixed matterplate andthe cam-plate may be made in separate piecesand fastened to' gether in any suitable way; but I prefer for the sakeof lightness to make the same of one piece of sheet metal, which may bedone by stamping out a picco of a suitable form and turning up the endsto form the can1-plates, which may either, have the slots or guidesstamped out at the same time the plate is cut, or they may be made afterthe plate is bent to its shape, which is the preferable way. By thisconstruction the cam-plates stiften the ends of the fixed inatterplate,which would be necessary when made of thin metal. rPhey would also servethe same purpose if made separately and secured to the iiXedmatterplate. I vprefer to turn up the edges of the fixed mattenpl ate tostiffen it in that direction also, or, if made ot cast metal, a ridgemay be formed on each side for the same purpose.

If the plates are made of sheet metal, nuts may be used on the end ofthe screws, secu ring the plates to the arms; or piecesj may be solderedto the plates I and cam-plates J, which may be threaded to receive thescrews.

Attached to the plate I in any convenient manner are standards K, whichare slotted to receive a shaft, L, for the drums M ofthe typebands. It'the ii'ed matter-plate is made of thin sheet metal, the standards K maybe soldered fast thereto; but, if made of thicker or I cast metal, theymay be screwed on, as shown in dotted lines in Fig. 1. I prefer toconnect and strengthen these standards by ribs k, thus making them bothof one piece of metal, which not only strengthens them, but the ribsalso act to stiften the fixed matter-plate I. At the the feet of thesestandards (see Fig. 5) are cast lugs N, (or they may be formed integralwith theplate I, if the latter is cast,) which are bored and threaded toreceive screws O, whose ends have shoulders and pins, which latterproject beyond the plate and take into holes in a cross-bar, P, whichforms the lower bearing of the .type-hands Q, the whole being soarranged that by turning the screws O the position of the faces or typeof the bands may be adjusted with respect to the iixed matter to besecured to the fixed Inatter-plate I. On the upper part (see Fig. 5) ofthe standards are cast projections or lugs R, through which IDO make thedrums M, that carry the type-bands .case they may of course be madethinner than loosely pass screws S, whose lower ends pass into threadedholes in the shaft L, and around whose upper ends are spiral springs T,by which construction an elastic tension is given to the bands, whichtension can be regulated by turning the screws. f

To make all the parts as light as possible, I

hollow, as shown in Fig. 2. Each of the two outer drums has its outerside, m, extended beyond the surface of the band, for convenience inturning without soiling the fingers; but the other side, m', is simplymade ush with the outer circumference of the drum. The middle drum hasboth its sides m eirtended slightly beyond the circumference, so as toalways retain its band in the proper position. The sides of this drumalso act to keep the outer bands from getting out of place. The sides ordisks of the drums are shown perforated; but they may bc made solid, inwhich When perforated. The cylinders of the drums may be soldered orotherwise attached to the disks forming the sides.

By the construction above described, and shown in the drawings theoscillating part ofthe stamp is made very light yet quite strong, therelative position of the acting faces of the bands and the fixedmatter-plate can be rigidly adjusted, and an adjustable and elastictension can be maintained upon the bands, all of which are importantpoints in this class of stamps. If the parts are made too heavy, theyhave so much inertia that when the stamp is rapidly operated theconstant shock and concussion soon wear out the pins and cam-plates ortheir equivalents.

It will be observed that there are four pins, EE E E, instead of the twoheretofore employed,where the turningdevices areconnected to the plateat the side. By this construction the plate is operated on both endssimultaneously, and thus there is no twisting strain. Another advantageis that there is double the bearing-surface, and thus the stamp is muchmore durable than where only one guide and pin is in operation at atime. This is especially valuable where the die and cam plates are madeof sheet metal, as the latter will wear out where only one guide and pinis in use at a time.

The adjustments not only form a great convenience to the manufacturer,but are: ynecessary for the proper working of the stamp, because when inuse the bands stretch considerably, and hence become loose on the drums,and are thus liable to slip.

Instead of passing the screws O into the cross-bar P, the latter may bemade with pins 1o, which enter the fixed matter-plate and bear againstthe ends of the screws O, as shown in Fig. 4.

In referring to the relative positions of the parts as upper77 and lowerI wishto be understood as referring to them as shown in Fig. 5, in whichthe stamp is represented as in the act of printing.

What I claim as new isl. The combination, in a self-inking stamp, of thexed matter-plate I, the type-bands Q, the upper bearing for the same,and the adj ustable cross-bar P, substantially as described.

2. The combination, in a self-inking stamp, of the fixed matter-plate I,the type-bands Q. the upper bearing for the same, the cross-bar l), andadj usting-screws O, with the frame A, inking-pad B, handle G, and yokeH, substantially as described.

3. The combination, in a hand-stamp, ofthe Xed matter-plate I, thetype-bands, and supports for the same, with the shaft L, theadjusting-screws S, and the springs T, substantially as described.

4. In a self-inking hand-stamp, a die-plate having a doubleslottedcam-plate extending across each end of the die-plate, and a frameprovided with the pins corresponding with said double-slottedcam-plates, whereby the acting surface of the cam-plates is increased,the die plate strengthened, and torsional strain on the die-plateprevented, substantially as described.

In testimony whereof l affix my signature, in presence of two witnesses,this 30th day of December, 1885.

BENJAMIN B. I-IILL. Witnesses:

WILLIAM S. ToLAND, GEO. W. W. GRAY.

